#zhuanpan_box{
   width: 90%;
    position: absolute;
    margin: 0 5%;
    top: 10%;
}
#zhuanpan_back{
    width: 100%;
    display: block;
}
#zhuanpan_select{
position: absolute;
    width: 73%;
    top: 12.1%;
    left: 14%;
    /* background: red; */
    background: rgba(200,0,0,0.5);
    display: block;
}